SOIL EROSION is a naturally occurring process on all land. The agents of soil erosion are water and wind, each contributing a significant amount of soil loss each year. Soil erosion and degradation are so severe worldwide that it threatens our agricultural base.
SOIL EROSION may be a slow process that continues relatively unnoticed, or it may occur at an alarming rate causing serious loss of topsoil. The loss of soil from farmland may be reflected in reduced crop production potential, lower surface water quality, and damaged drainage networks.
The rate and magnitude of soil erosion by water is controlled by these factors: rainfall intensity and runoff, soil erodibility, slope gradient and length, and vegetation.